LM340S-5.0 Specifications
Manufacturer: National Semiconductor
Part Number: LM340S-5.0
Product Type: Linear Voltage Regulator
Output Voltage: 5 V Fixed
Output Current: Up to 1.5 A
Input Voltage Range: Up to 35 V
Regulator Type: Positive Fixed Output
Dropout Voltage: Standard Linear Regulator Architecture
Package Type: TO-263
Mounting Type: Surface Mount
Protection Features: Thermal Shutdown and Current Limit
Operating Temperature Range: -40°C to +125°C
Applications Class: Power Regulation
Packaging: Factory
Key Features
The LM340S-5.0 is a fixed linear voltage regulator designed to provide a stable 5 volt output for electronic circuits. It supports output currents up to 1.5 amps when proper thermal dissipation is provided. Additionally, the regulator includes internal current limiting and thermal shutdown protection which helps safeguard the device during overload conditions. Because linear regulators offer simple implementation with minimal external components, engineers frequently use them in power supply designs. As a result, the LM340S-5.0 supports dependable voltage regulation in many embedded electronic systems.
Applications
Embedded microcontroller power supplies
Industrial control electronics
Communication equipment power regulation
Instrumentation electronics
Consumer electronics power supplies
Embedded computing platforms
Digital logic power regulation
Power distribution modules
Product Overview
The LM340S-5.0 from National Semiconductor provides reliable voltage regulation for circuits that require a stable 5 volt power rail. First, the device uses a linear regulation architecture which simplifies power supply design.
Additionally, the regulator integrates protection features including current limiting and thermal shutdown. Because many electronic systems require stable regulated voltage for digital logic and microcontrollers, linear regulators remain widely used in embedded electronics.
Moreover, the TO-263 surface mount package supports efficient heat dissipation and reliable PCB assembly. Engineers frequently use regulators such as the LM340 series in industrial electronics, communication hardware, and embedded control systems.
Therefore, the LM340S-5.0 remains a dependable voltage regulator solution for electronic systems that require stable 5 volt output power.
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